Research on dynamic voltage restorer based on series-parallel hybrid

摘要

In this paper, a series-parallel hybrid dynamic voltage restorer (DVR) is taken as the research object, and the compensation strategy and control method of the DVR are proposed. The mathematical model of the current loop and voltage loop in the control strategy is simplified. Secondly, a seriesparallel hybrid topology dynamic voltage restorer is studied. This type can simplify the structure of the DVR system and improve the stability of the DVR system. Finally, the working conditions of instantaneous voltage drop and swell at different moments were simulated in MATLAB/SIMULINK. The simulation results proved that the detection method and control strategy used in the DVR in this paper have good fastness and accuracy.